Average sea water temperature in September:
+86.0°F
| Minimum sea water temperature in September: | 88.3°F |
| Maximum sea water temperature in September: | 83.1°F |
Daily sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 87.7°F. The highest and lowest sea temperatures during the month were 88.3°F and 86.7°F.
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| Siesta Key |
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| Siesta Key |
14 days
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| Siesta Key |
Monthly sea water temperature in Siesta Key, °F
Which USA resorts have warmest sea in September?
| Place name | September 2026 | September 2025 |
|---|---|---|
| Key West | 88.5°F | 86.9°F |
| Naples | 87.8°F | 86.1°F |
| Key Largo | 87.8°F | 86.6°F |
| Siesta Key | 87.7°F | 84.9°F |
| Sarasota | 87.7°F | 84.8°F |
| Cape Coral | 87.5°F | 85.2°F |
| Houston | 87.3°F | 84.9°F |
| Corpus Christi | 87.2°F | 85.8°F |
| Tampa | 87.1°F | 84.3°F |
| St. Petersburg | 87.0°F | 84.1°F |
| Clearwater Beach | 87.0°F | 84.0°F |
| West Palm Beach | 86.8°F | 86.2°F |
| New Orleans | 86.8°F | 84.3°F |
| Fort Lauderdale | 86.7°F | 86.4°F |
| Miami Beach | 86.5°F | 86.1°F |
| Orange Beach | 86.3°F | 84.0°F |
| Pensacola Beach | 86.3°F | 83.9°F |
| Panama City Beach | 86.3°F | 83.4°F |
| Pensacola | 86.3°F | 83.9°F |
| Fort Walton Beach | 86.2°F | 83.3°F |
Best time for vacation in Siesta Key
Siesta Key on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Siesta Key
Local time: 06:11
September 19, saturday
0900
77°F
W
7 mph
7 mph
1200
84°F
W
5 mph
5 mph
1500
88°F
E
4 mph
4 mph
1800
84°F
E
7 mph
7 mph
2100
84°F
E
4 mph
4 mph
September 20, sunday
0000
81°F
W
8 mph
8 mph
0300
79°F
W
7 mph
7 mph
0600
77°F
W
7 mph
7 mph
